At the GEO-XIV Plenary, GEO Secretariat Director Barbara Ryan stated that the "link from data provider research infrastructures to users will become more important" [1]. This statement opens several interesting questions. Who are the users? What data are provided by research infrastructures (RIs)? What kind of links are there between data provider RIs and users? How do RIs provide the data needed by users? Do users produce data? Are such derived data acquired by RIs, further curated, published, processed and used?   Users...